Machine for attaching soles to lasted shoes



April 16, 1929. H. WALTHER MACHINE FOR ATTACHING SOLES T0 LASTED SHOESFiled May 2, 1928 I n 17 4 H a 5 m 2% a 9 m 5 u M o m 7 O 0 a a 1 m m 2g (I| ll a s r M a a w f H n B 99% ww PM 17 w 4 a? M 1 I 5 I a a a 5 a 0n 4 4 I I. m 4 m Jnven for:

atentecl Apr. 16, 1929.

UlTED STATES HEINRICH WALTHER, OF FRANKFORT 0NTHE-MAIN, GERMANY.

MACHINE FOR ATTACHING SOLES T0 LASTED SHOES.

Application filed May 2, 1928, Serial No.

This invention has reference to improvements in machines for attachingsoles to lasted shoes, and more particularly to machines whereby thecontacting surfaces of the soles and of the lasted shoes havingpreviously been coated with an adhesive are firmly pressed together andthe pressure maintained for a suflicient time to allow the cement toset. The machines of this kind consist mostly of a series of pressuredevices arranged on a rotatable carrier each device being adapted towork upon a separate shoe. These pressure devices consist of flexiblecushions onto which the shoes operated upon are held or pressed bybridge-like levers.

The object of the present invention is to simplify the machine referredto and to improve its operation.

According to an important feature of the invention the cushions and thepressing levers are pivoted or linked to each other so as to close likescissors and to grasp the sole and the lasted shoe to be connected toeach other at first at one end, preferably at the toe of the shoe. Bythis means the pressure exerted upon the parts to be united propagatesfrom one end, preferably from the toe of the shoe to the other end, thuspreventing a displacing of the sole with relation to the lasted shoe.Thereupon the cushion is additionally pressed again the shoe in order tofully conform the sole to the shank of the lasted shoe.

Other features of the invention and details of construction will beapparent from the following description and the accompanying drawings,in which Fig. 1 is a longitudinal section of a part of the machine;

Fig. 2 is a partial front View of the machine;

Fig. 3 is a view of the bracket 5 with certain parts cooperatingtherewith as seen from the front and Fig. 4 is a cross-section of thecushion along the line AB of Fig. 1.

The shaft 1 is rotatable in the journals 2 and 3 of the brackets 4 and 5relatively. These two brackets form a rigid machine-frame which may befastened to the floor in any convenient manner. To the shaft 1 isfastened a plurality of arms 14. Every arm 14 carries a separatepressure device adapted to work upon a shoe. As all pressure devices areof equal construction, I shall describe one device only.

To the arm 14 are screwed the brackets 15 274,542, and in Germany July13, 1926.

and 16. To the bracket 16 is pivoted at 50 the two-armed lever 9. Thislever carries at its front-end the bridge-piece 22 resting in theworking position with its pressing feet 23, 23 upon the shoe 51 in themanner illustrated 1n the drawing. The rear-end of the lever 9 isadapted to abut with its spherical surface 24 upon the adJusting screw20 of the slide 13 gulded in the bracket 16 and held in the shown upperposition by the elbow-lever 17 the teeth 21 of which are pressed intoengagement with the teeth 21 of the slide 13 by the bolt 19 and thespring 18. The rear-end of the lever 9 is further connected by the link40 to the container 8 of the cushion 41. The container 8 is itself alever held down at the left end upon the spring 43 by the nut 44 of thebolt 44. The bolt 44 is screwed into the slide 12 held in its upperposition in a similar manner as the slide 13 by an elbow-lever 17 Thehand-wheel 45 may be rotated upon the bolt 44 in order to adjust thecompression of the spring 43. The lever 9 and the container 8 are keptapart by the spring 25 but they may be made to approach each other bythe raising of slide 13. WVhile the lever 9 is lowered with theoperating bridge-piece 22 the container 8 is raised by the link 40, theleft end of the container resting upon the spring 43. By this means theparts of the shoe to be united are at first taken hold of at the toe ofthe shoe. When the slide 13 is fully raised the sole is pressed on itsentire length against the shoe. Thereupon the slide 12 is carriedupwards in order to apply an additional pressure on the shoe. As thestroke of the container 8 at the heel part of the shoe is longer thanthe stroke at the toe part of the shoe, the movement of the slide 12will effect an additional pressure chiefly at the shank of the shoe justwhere it is very diflicult to conform the sole to the curvature of thelasted shoe.

Of course the cushion 41 consists of a rubher or like bag filled with afluid or a yielding material. The cushion 41 is protected by an elasticcover 42 having a thick edge 42' accommodated in a corresponding grooveof the container 8 and held fast in the groove by the cushion. The cover42 thus prevents the cushion from extruding from the container when theshoe is pressed therein and allows the free edge of the sole to remainflat while without the said cover the edge would turn upwards.

Having now described one pressure device,

, I will yet mention that the Slldes 12 and 13 have rollers 10 and 11relatively by means of which they are moved upwardly in the followmgmanner.

To the bracket 5 there is fastened a plate 7 the upper rim of whichforms a curved path for the roller 11 of the succeeding pressuredevices. In the plate 7 is guided a slide 34 adapted to be moved upwardsfrom a treadle 34, the roller 11 and the slide 13. Thereby the lever 9and the bridge-piece 22 are lowered to press the shoe onto the cushion41. The lever 9 while being lowered lifts the container 8 so that thelever 9 and the container 8 move both at the same time against eachother like scissor-blades in order to first grasp the lasted shoe andthe sole at the toe and then compress these two parts on their wholelength.

The slide 13 is locked in its upper position by the lever 17 in themanner already described.

The shaft 1 may now be rotated either by hand or by any motive power inthe direction indicated by the arrow in Figs. 2 and 3. if the roller 11has not been lifted by the treadle as to be clear of the cam 7" of theplate 7 the slide 13 is additionally lifted by that cam when the rollercomes into position 11'.

To the bracket 4 is likewise fastened a camplate 6 for acting upon theroller 10 and the slide 12. While the roller 11 is'in the position shownin Fig. 3 in full lines, the roller 10 rests upon the rim of the plate 6within the notch 6. When the shaft 1 rotates the roller 10 rides overthe cam 6 and efiects by means of the slide 12 and the spring 43 anadditional yielding pressure upon the left end of the container 8. Theslide 12 is locked in its upper position by an elbow lever 17 similar inits construction and operation to the lever 17 and needs therefore nofurther description.

The slides 12, 13 remain locked and the shoe remains under pressure whenthe rollers 10, 11 leave the cam-plates 6 and 7 relatively until theshaft 1 makes almost a whole revolution and the said rollers come intocontact with the cams 6 and 7 These cams are a little higher than thecams 6" and 7" and are intended to slightly lift the slides 12, 13, inorder to allow the elbow levers 17 17 to be swung out of engagement withthe said slides by the earns 35, 35 on the plates 6 and 7. The slidesbeing unlocked assume again their lower position as soon as theirrollers 10 and 11 come into the notches 6 and 7 relatively. Now thespring 25 lifts the front end of the lever 9 at the same time loweringby means of the link 40 the container 8, thus allowing the shoe with theadhering sole to be removed from the machine.

As the machine has several arms 14 it makes a step by step rotation, sothat all pressure devices are succeedingly brought into the positionsfor removal of the finished shoe and for introducing a fresh shoe..

I claim:

1. In a machine for attaching soles to lasted shoes by means of anadhesive, a flexiblecushion acting on the sole, a lever pressing on thelasted shoe and cooperating with the cushion to bring the shoe and thesole into intimate contact, a cushion-carrier, and means for moving thepressing lever and the cushion-carrier simultaneously against eachother.

2. In a machine for attaching soles to lasted shoes by means of anadhesive, a flexible cushion acting on the sole, a lever pressing on thelasted shoe and cooperating with the cushion to bring the shoe and thesole into intimate contact, a cushion-carrier, means for moving thelever against the cushion, and a connection between the lever and thecushion-carrier, so that the pressing lever and the said carrier movesimultaneously against each other.

3. In a machine for attaching soles to lasted shoes by means of anadhesive, a flexible cushion acting on the sole, a pressure-foot actingon the rear-part of the shoe, a pressure-foot acting on the fore-part ofthe shoe, a lever carrying the pressure-feet and cooperating with thecushion to bring the shoe and the sole into intimate contact, acushioncarrier, a pivot-journal of the lever on the side of the pressurefoot acting on the fore part of the shoe, means for moving the leverwith the pressure-feet, and a pivot-connec- 1 tion between the lever andthe cushion-carrier, so that the lever and the cushion-carrier move likeshear-blades against each other.

4. In a machine for attaching soles to lasted shoes by means of anadhesive, a flexible cushion acting on the sole, a pressure-foot actingon the rear-part of the shoe, a pressure foot acting on the fore-part ofthe shoe, a lever carrying the pressure-feet and cooperating with thecushion to bring the shoe and the sole into intimate contact, acushion-carrier, a pivot-journal of the lever on the side of thepressure foot acting on the fore part of the shoe, means for moving thelever with the pressure-feet, a pivot-connection between the lever andthe cushion on the same side of and farther apart from the pressure footacting on the fore part of the shoe than the said pivot-journal, andseparate means for additionally moving the cushion-carrier arranged onthe side of the pressure-foot acting on the rear part of the shoe.

5. In a machine for attaching soles to lasted shoes by means of anadhesive, a rotatable carrier, a plurality of devices for pressing solesto lasted shoes arranged on the rotatable carrier, each deviceconsisting of a container, a flexible cushion accommodated within thecontainer, and a lever pressing the shoe against the cushion, andstationary means for successively pressing each lever and the associatedcushion-carrier against each other.

6. In a machine for attaching soles to lasted shoes by means of anadhesive, a rotatable carrier, a plurality of devices for pressing solesto lasted shoes arranged on the rotatable carrier, each deviceconsisting of a container, a flexible cushion accommodated within thecontainer, and a lever pressing the shoe against the cushion, stationarymeans for successively pressing each lever and the associatedcushion-carrier against each other, means on the rotatable carrier forlocking the lever and the cushion-carrier in the pressing position, andstationary means for successively releasing the locking means of thesingle pressing devices.

7. In a machine for attaching soles to lasted shoes by means of anadhesive, a rotatable carrier, a plurality of devices for pressing solesto lasted shoes arranged on the rotatable carrier, each deviceconsisting of a con-' tainer, a flexible cushion accommodated Within thecontainer, and a lever pressing the shoe against the cushion, footoperated means and means operated by the rotation of the device carrierfor successively pressing each lever and the associated cushion-carrieragainst each other.

In testimony whereof I aifix my signature.

HEINRICH WALTHER.

